共查询到20条相似文献,搜索用时 31 毫秒
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High-performance operation of monolithically-integrated multipurpose reconfigurable optical add-drop multiplexer 总被引:1,自引:0,他引:1
Soole J.B.D. Chand N. Earnshaw M.P. Kojima K. Pafchek R. Ling M. Swaminathan V. 《Electronics letters》2003,39(5):436-437
WDM operation of a novel monolithically-integrated 16-channel reconfigurable add-drop multiplexer (ROADM), demonstrating high crosstalk suppression and cascadability to eight nodes for 10 Gbit/s NRZ signals, is reported. The device provides separate wavelength add/drop ports and a common wavelength-multiplexed add/drop port for high system functionality. 相似文献
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光纤光栅和环行器构成的多路光分插复用器 总被引:1,自引:0,他引:1
讨论由光纤光栅和光环行器构成的光分插复用器的结构,性能和特点,提出采用一段刻有多个光纤布拉格光栅的光纤,两个光环行器,WDM复用器和解复用器等器件,构造能够对WDM的多个信道实施分插操作的光分插复用器,该光分插复用器的插入损耗要比简单地把多个单路的光分插复用器进行级联时小得多,波分复用全光网络中的光分插复用技术,是实现波分复用网络的关键技术之一。 相似文献
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Highly stable optical add/drop multiplexer using polarization beam splitters and fiber Bragg gratings 总被引:1,自引:0,他引:1
Se Yoon Kim Sang Bae Lee Joon Chung Sang Yong Kim Il Jong Park Jichai Jeong Sang Sam Choi 《Photonics Technology Letters, IEEE》1997,9(8):1119-1121
We demonstrate a novel wavelength-division add/drop multiplexer employing fiber Bragg gratings and polarization beam splitters. The multiplexer is easy to fabricate without any special technique such as UV trimming, and yet shows very stable performance with less than 0.3-dB crosstalk power penalty in a 0.8-nm-spaced, 2.5-Gb/s-per-channel wavelength-division multiplexing (WDM) transmission system. 相似文献
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《Quantum Electronics, IEEE Journal of》2009,45(4):396-401
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The feasibility of multicast-capable-reconfigurable optical add/drop multiplexer (MC-ROADM) based on broadcast-and-select switch is experimentally demonstrated. The MC-ROADM can support unicast connection as well as multicast connection, and can provide directionless switching and low insertion loss in path-through channel. We implement fully-reconfigurable multi-degree MC-ROADM based on wavelength selective switch, and evaluate multicasting performances by fully loading 40 × 10 Gbit/s wavelength division multiplexed (WDM) signals. For unicast and multicast operation, measured spectrum and bit-error-rate (BER) show good uniformity and no power penalty. After 1040 km transmission with 25 dB span loss, the measured BER is higher than forward-error-correction (FEC) limit for BER of 10−15. 相似文献
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一种基于光纤Bragg光栅的全光纤分/插复用器 总被引:3,自引:0,他引:3
研制了用于WDM全光网的全光纤型分/插复用器,由两个相同的光纤环行器和串接其间的光纤Bragg光栅组成。其中光纤Bragg光栅是用紫外光直写方式在普通单模光纤上制成。文中给出了该复用器的上/下路端口隔离度和信道插入抽耗等主要测量结果。其特点是结构简单,可实现信道波长再利用,从而提高网络的灵活性。 相似文献
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An experimental optical WDM ring network is proposed. It uses a proper add/drop multiplexer based on a fibre grating filter. Both-way transmission using a wavelength reuse scheme is successfully demonstrated without any crosstalk 相似文献
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Gaudino R. Len M. Desa G. Shell M. Blumenthal D.J. 《Selected Areas in Communications, IEEE Journal on》1998,16(7):1270-1285
The experimental demonstration of MOSAIC, a reconfigurable WDM add/drop network with subcarrier multiplexed control, is presented. The MOSAIC network implements the optical layer protocol to support bit-rate transparent multichannel lightpaths. Two types of add/drop multiplexers are implemented and combined in a three-node experiment. Multihop lightpaths are established giving an end-to-end bit error rate of better than 10-9 at 1.2 Gbps. The reconfigurable add/drop multiplexer is based on a novel dilated 2×2 acoustooptic filter switch crossconnect and an analog optoelectronic crossconnect that drives a ten-wavelength laser array transmitter up to 2.5 Gbps per wavelength. The fixed wavelength add/drop multiplexer utilizes a fast digitally tunable laser transmitter. Both add/drop multiplexers support bit-rate transparent 2R optoelectronic regeneration as well as wavelength translation. Subcarrier multiplexing on each wavelength is used to support channel state monitoring and channel equalization as well as transmission of digital network control information. Systems experiments demonstrate cascaded 2R optoelectronic regeneration with wavelength translation and cascaded multichannel optical switching with up to seven hops. It is shown that combining cascaded 2R optoelectronic regeneration with cascaded multichannel optical switching can be used to balance jitter accumulation and amplified spontaneous emission generated amplitude noise to yield high signal-to-noise ratio for lightpaths 相似文献
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Xiang-Fei Chen Yi Luo Sai Hu 《Journal of Infrared, Millimeter and Terahertz Waves》2000,21(8):1313-1319
In this paper, super Moiré grating (SMG) with multiple superimposed gratings, in the best of our knowledge, is studied at first time. A flat multichannel transmission filter based on a chirped SMG with three superimposed gratings can be achieved, which benefits wavelength-division multiplexing (WDM) system. At the same time, a reflection filter can also be obtained in a chirped SMG, which can be used as an optical add/drop multiplexer filter for WDM system. 相似文献
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Along with the emergence and maturity of 100Gbit/s technologies, numbers of trial and commercial 100Gbit/s Wavelength Division Multiplexing (WDM) systems have been established worldwide. The research- oriented lab tests of 100Gbit/s WDM systems were done by China Unicom in 2012. The 100Gbit/s technologies of polarization multi-plex-quadrature phase shift keying with co-herent detection from multiple vendors have been studied. There are some further issues to be specified before the commercial application of 100Gbit/s WDM system is implemented in large scale in backbone network, including optical performance parameters, optical performance monitoring of 100Gbit/s system, protection mechanism, selection of client interface and comprehensive Operation, Administration and Maintenance (OAM). 相似文献
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Optical network based on wavelength-division multiplexing (WDM) technology will be a most active research topic in the 21 st century. This paper describes a WDM multiple-wavelength transmitter and several key corresponding devices for optical network, including amplified spontaneous emission (ASE) spectrum-sliced multiple-wavelength optical source, optical add/drop multiplexer (OADM), semiconductor optical amplifier (SOA), as well as the spectrum noise suppression scheme. The new research results are reported, and the applications of these developed devices are also introduced. 相似文献
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基于磁调谐光纤Bragg光栅的全光纤型多路分/插复用器 总被引:1,自引:0,他引:1
提出了一种新型的用作多信道切换的光分/插复用器,它由多个可调谐光纤Bragg光栅、一对光纤环行器、WDM复用器和解复用器构成。讨论了该分/插复用器的结构、性能和特点。利用磁极间磁场力使光纤光栅产生显著的波称偏移。用可编程磁极来调控光栅的波长偏移。其信道波长调谐速度快,装置无需外加能源即可保护信道波长的偏移。 相似文献
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This paper proposed a hybrid WDM ring–tree topology which employs spectrally efficient 60 Gbps non-return-to-zero/polarization shift keying optical orthogonal modulated signals. The reconfigurable optical add/drop multiplexers, optical cross-connects and semiconductor optical amplifiers are utilized to make hybrid ring–tree architecture. Each optical add/drop multiplexer node is connected to tree topology to further increase the number of users. The main contribution of the proposed spectrally efficient hybrid optical network is to support the maximum number of users within limited bandwidth for future communication networks. Also, the proposed resilient ring–tree architecture has advantages such as high optical node density and bandwidth/spectral efficiency as compared to conventional packet-switched optical access network. 相似文献
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介绍了可重构光分插复用器(reconfigurable optical add/drop multiplexer,ROADM)网络的发展历程、ROADM技术方案以及国内ROADM网络的部署情况。全面阐述了ROADM关键技术的发展方向,包括光交叉连接(optical cross-connect,OXC)设备、高维度波长选择开关(wavelength selected switch,WSS)、波长无关/方向无关/竞争无关ROADM(colorless/directionless/contentionless ROADM,CDC-ROADM)、400 Gbit/s FlexGrid ROADM、下一代波长交换光网络(next-generation wavelength switched optical network,WSON2.0)智能控制平面技术。分析了现有ROADM网络应用场景与技术发展趋势,展望了ROADM全光交换网络未来发展前景。 相似文献